what can cause a lean condition besides tune

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Jun 18, 2012 | 04:59 PM

#21

MUSTANGBRKR02

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From: Maine

I know. That is all that I did too. I am looking at the tune now and compared it vs stock and there is nothing in the actual tune itself changed. Just what I listed above. PE is 1.250 above 6k and 1.188 from 4-6k which should be really rich for it.

Anyone wanting to see the tune just look at a stock tune and that is it.

Jun 18, 2012 | 05:41 PM

#22

hodge9386

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From: pooler, ga

could the fact that i have a ls6 intake and full exhaust change it that much?

Jun 18, 2012 | 05:55 PM

#23

MUSTANGBRKR02

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From: Maine

It could but I think there is something not switching or reading properly.

Jun 18, 2012 | 05:56 PM

#24

MUSTANGBRKR02

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From: Maine

I should be down there Saturday.

Jun 18, 2012 | 06:00 PM

#25

hodge9386

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From: pooler, ga

ok and thanks again.

Jun 18, 2012 | 07:59 PM

#26

bayer-z28

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From: N. Falmouth MA

Quote:

Originally Posted by hodge9386

bayer- it has a ls6 intake with a stock tb that i ported and polished a lil bit. i did not get anywhere close to the blade all i really did is take the edges out of it an smooth it out a lil and then polish it. i did not do the bump stop mod.

It's easy enough just to check the outside stop on the TB first and see if it's even allowing you to go full WOT. If it's not, your PCM won't see 100% throttle and it won't go into power enrichment. Look where the stop is on the left side of the TB. You'd have to take a volt reading at the TPS to see if it's seeing WOT. I think it's 5v. But Not exactly sure off hand.

And it's not good to jump tunes around from someone else's car. Two identical cars with identical mods will tune differently. Just the way they are. They're "alive" in a way and all want different mixtures, spark curves and take in different amounts of air. Save for a tune, and find a reputable shop in your area. And FWIW, with LT's, CB, Lid and P+P'd TB, I made 336/346 at the wheels.

It'll have a small piece ground out of it if it has been done. If it's all straight an even casting, it hasn't been done. I'm betting this is your problem. Real simple fix.

Last edited by bayer-z28; Jun 18, 2012 at 08:07 PM.

Jun 18, 2012 | 08:40 PM

#27

hodge9386

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From: pooler, ga

no i know for a fact it hasnt been done. it still has the adjustable screw in it. if it has a stock tune in it i dont see why it wouldnt work just like it should from the factory but i will look into it tomorrow. thanks